Sewer-structure invert-section



1'. H. ZINN.

SEWER STRUCTURE INVERT SECTION. APPLICATION FILED AUG.I6,19I9.

1,399,454 Patented Deco fi, MIL.

WITNESS:

k 7% WW [TED JACOB H. ZINN, 01F INDIANAPOLIS, INDIANA.

SEWER-STRUCTURE INVER'JP-SECTION.

Specification of Letters Patent.

Patented Dee. e, T921.

Application filed August 16, 1919. Serial No. 317,925.

To all whom it may concern:

Be it known that T, JAooB H. ZINN, a citizen of the United States, residing at Indianapolis, in the county of Marion and State of llndiana, have invented a new and useful Sewer-Structure Invert-Section, of which the following is a specification, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon.

This invention relates to composite segmental blocks or sections that are designed for use in tubular structures, as in the construction of silos, cisterns, Wells, sewers or culverts, the invention having reference more particularly to sections or blocks having one side thereof adapted to be imperviousto water.

An object of the invention is to provide an improved sewer structure invert section which shall be so constructed as to be adapted to be composed mainly of strong and inexpensive material and monolithic in character, and in large portable sizes and which shall have one water proof side adapted to resist the abrasive action of flowing water and solids carried therewith, common in sewerage and drainage systems.

Another object is to provide a portable composite structural block or section that shall be strong and adapted to be firmly locked to like sections or blocks, either in the construction of sewers or horizontal tubes, or in the construction of vertical tubes such as silo or cistern walls.

A further object is to provide a complete composite structural block or section which shall be adapted for rapid construction of sewers or walls and be suitable for ready use by unskilled workmen, and in many cases without requiring the use of contour forms or supporting structures.

A still further object is to provide improved composite sewer structure invert sections or wall blocks that shall have water proof inner sides or linings of durable inaposed principally of monolithic concrete having a lining on the concave side thereof composed of tiling blocks or sections; and, the invention consists also further in the parts and combinations and arrangements of parts as hereinafter particularly described and further pointed out in the accompanying claims.

Referring to the drawings, Figure 1 is a plan of the new structural block orinvert section showing particularly the concave side thereof; Fig. 2 is a fragmentary plan of the block or section showing the portion that is adapted to be connected with an opposite portion of an adjacent block or section appearing in the preceding figure; Fig. 3 is a fragmentary end view of the new block or section; and, Fig. 4 is a transverse section of the new structural block or section.

Similar reference characters in the dif-' ferent figures of the drawings indicate like elements or features of construction herein referred to in detail.

The new block or invert section comprises a concrete body portion 1 which may be readily molded in a suitable mold or form and composed principally of cement, the body portion being curved so as to have a convex outer or under surface 2 and a concave inner or upper side 3.

The body portion has plane end faces 4: and 5 and also plane or squared edges 6 and 7. The ends 4: and 5 have grooves 8 and 9 therein respectively, and the edges 6 and 7 have grooves 10 and 11 therein respectively that extend to the other grooves, to receive keying cement or mortar in the joints of the blocks or sections. Each block or section comprises also a suitable number of segmental tiles arranged in longitudinal rows comprising end blocks or sections 12, 13, 14C, 15, arranged on the concave side of the concrete body portion with one end flush or on one and the same plane with one end 4 of the body portion, there being other end sections 16, 17, 18, 19, arranged in the rows respectively with their outer ends on one and the same plane with the opposite end 5 of the body portion. The rows mentioned are spaced apart to receive other rows of sections between them which comprise end sections 20, 21, 22, 23, with their outer ends 7 arranged at a distance inward from the end 4 of the body portion 1; there being opposite end sections in the rows which extend outward beyond the opposite end 5 of the body portion to constitute locking tongues or projections 24:, 25, 26, 27, adapted to extend into the spaces or recesses formed between rows of sections in an adjacent block or invert section.

I body portion 1 of each block or section has a layer of -metallic reinforcement 34 arranged adjacent to the inner side of the grooves 10 .and 11, and of suitable dimen sions to extend beyond the edges to provide locking members 35 and 36 to secure other blocks or sections firmly thereto, or to constitute anchors for solid concrete walls of sewers which may be molded onto the.

edges of the invert sections.

In some cases the tiling blocks or sections are spaced apart a suitable distance to re ceive locking or keying members 37 of concrete which are formed integrally with the body portion 1, in which case metallic reinforcement strips 38 are embedded in the concrete portions and extend as branches from the reinforcement layer 34 into the spaces between the tiling sections or blocks and are adapted to hold the latter apart dur ing molding operations to afford spaces for receiving the keying members 37 in plastic condition.

In practical use the new structural blocks or sections are arranged and to end, as indicated in Figs. 1 and 2, either horizontally or vertically, and brought together with the dowels or projections 24, 25, 26, 27, entered into the recesses prepared for them in the adjacent block or section, the recesses having the grooves 31 to'receive the ribs or wings of the dowel portions of the locking tiles or sections. When the blocks are used as sewer invert sections the sewer tube may be completed either by arranging like blocks or sections on the invert section or by molding concrete sides and a crown on the invert section. In building vertical walls the entire-wall may be composed of the new structural block or section, as will be a parent, so that when a silo wall is built t io inner side of the wall is impervious to moisture as desired, the concave faces of the tiling blocks preferably being vitrified and glazed.

- Having thus described the invention, what is claimed as new is- 1. In a portable sewer structure invert section, the combination of a curved monolithic concrete body having plane edges and ends with grooves therein one side of the body being concave and having longitudinal grooves therein, and a plurality of segmental tile sections arranged on said concave side and having longitudinal ribs secured in said longitudinal grooves.

2. In a portable sewer structure invert section, the combination of a curved monolithic concrete body having plane ends and edges and grooves in its ends and also in its edge portions, a curved reinforcement layer embedded in said body and having anchor portions extending out beyond the edge portions of the body adjacent to the grooves in said edge portions, and a plurality of segmental tile sections secured to said concave side.

3. Ina portable 'sewer structure invert section, the combination of a monolithic concrete body having plane ends and edges, there being a groove in each end and edge, a plurality of tile sections co-extensive collectively with said body and secured to one side thereof, said sections being arranged end to end in rows, alternate rows being advanced in one direction with one of the tiles in the row projecting beyond one of said plane ends, and a reinforcement layer embedded in said body and having branches extending between said sections, said layer having portions extending beyond said plane edges.

In testimony whereof, I affix my signature in presence of two witnesses.

J ACOB H. ZINN.

Witnesses:

0. S. WHITEMAN, E. T. SILVIUS. 

